IBMMAE 3 - Machine Elements

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IBMMAE 3 - Machine Elements

2020-2021

1

Exercise Introduction – Marquetry saw

Introduction to machine elements – Reminders

This exercise was an exam given in FIMI several years ago. Here, you are provided assembly drawings (DT1/DT2) and answering documents (DR1/DR2) already filled-in with the solutions. Therefore, almost nothing more to do!!

1. Rotating elements

a. Identify the different solutions for revolute and sliding joints in the document.

b. On DR2, draw the loads applied to the shaft and define their application points with letters (A, B…).

2. Complete joints and fit computation

a. Identify the various solutions for complete joints in the documents.

b. Propose a solution for complete joint between the pulley (30) and the shaft (5) that does not use any additional elements.

c. Compute the clearance (min and max values) for the fit between the support (24) and threaded plug (35)?

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IBMMAE 3 - Machine Elements

2 Assembling fit tables

DIMENSIONS (en mm)

from 0 3 6 10 18 30 50 80 120 180

to (included) 3 6 10 18 30 50 80 120 180 250 quality TOLERANCES FONDAMENTALES IT (en µm)

5 4 5 6 8 9 11 13 15 18 20

6 6 8 9 11 13 16 19 22 25 29

7 10 12 15 18 21 25 30 35 40 46

8 14 18 22 27 33 39 46 54 63 72

9 25 30 36 43 52 62 74 87 100 115

10 40 48 58 70 84 100 120 140 160 185 11 60 75 90 110 130 160 190 220 250 290 12 100 120 150 180 210 250 300 350 400 460 13 140 180 220 270 330 390 460 540 630 720 14 250 300 360 430 520 620 740 870 1000 1150 15 400 480 580 700 840 1000 1200 1400 1600 1850 16 600 750 900 1100 1300 1600 1900 2200 2500 2900

Shaft ⁰

to 3

>3 to 6

>6 to 10

>10 to 18

>18 to 30

>30 to 50

>50 to 80

>80 to 120

>120 to 180

>180 to 250

>250 to 315

>315 to 400

>400 to 500

d ^{- 20}_- ^{- 30}_- ^{- 40}_- ^{- 50}_- ^{- 65}_- ^{- 80}_- ^{- 100}_- ^{- 120}_- ^{- 145}_- ^{- 170}_- ^{- 190}_- ^{- 210}_- ^{- 230}_- e ^{- 14}

-

- 20 -

- 25 -

- 32 -

- 40 -

- 50 -

- 60 -

- 72 -

- 85 -

- 100 -

- 110 -

- 125 -

- 135 -

f ^{- 6}

-

- 10 -

- 13 -

- 16 -

- 20 -

- 25 -

- 30 -

- 36 -

- 43 -

- 50 -

- 56 -

- 62 -

- 68 -

g ^{- 2}_- ^{- 4}_- ^{- 5}_- ^{- 6}_- ^{- 7}_- ^{- 9}_- ^{- 10}_- ^{- 12}_- ^{- 14}_- ^{- 15}_- ^{- 17}_- ^{- 18}_- ^{- 20}_- h ^{- 0}

-

- 0 -

js _{± IT/2}_{± IT/2}_{± IT/2}_{± IT/2}_{± IT/2}_{± IT/2}_{± IT/2}_{± IT/2}_{± IT/2}_{± IT/2}_{± IT/2}_{± IT/2}_{± IT/2} k ⁺_{+ 0} ⁺_{+ 1} ⁺_{+ 1} ⁺_{+ 1} ⁺_{+ 2} ⁺_{+ 2} ⁺_{+ 2} ⁺_{+ 3} ⁺_{+ 3} ⁺_{+ 4} ⁺_{+ 4} ⁺_{+ 4} ⁺_{+ 5} m ⁺

+ 2 + + 4

+ + 6

+ + 7

+ + 8

+ + 9

+ + 11

+ + 13

+ + 15

+ + 17

+ + 20

+ + 21

+ + 23

n ⁺

+ 4 + + 8

+ + 10

+ + 12

+ + 15

+ + 17

+ + 20

+ + 23

+ + 27

+ + 31

+ + 34

+ + 37

+ + 40

p ⁺_{+ 6} ⁺_{+ 12} ⁺_{+ 15} ⁺_{+ 18} ⁺_{+ 22} ⁺_{+ 26} ⁺_{+ 32} ⁺_{+ 37} ⁺_{+ 43} ⁺_{+ 50} ⁺_{+ 56} ⁺_{+ 62} ⁺_{+ 68}

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1

A

1

A B

C D

E F

G H

2 3 4

B

C

D

E

F

G

H

234

2

1 / Date :22/05/2011 DessinÄ par :Alexandre Toumine

Feuille : Grp : Prof

A3H

Format

DT_scie_marquetterie.dft

Vue F

Vue F de 4, 6, 7, 9 et 10

X Y

ZONE ETUDE A

ZONE ETUDE B

h :hauteur rÄglable

Coupe A-A

Vue F de 10

B B

04

07

10

C C

Coupe C-C

⁰⁴

06

07 10

09 36

14

35 37

24

01

34 33 32 08

30 29 28 27 26 25 24

23 21 22

46 15

20

14

10 11

12

47 07 06

05 43

04

18 19

13

A A

15

6H8/f7O

O 8 f7

10 H9/h8 O

15 H8/f7 O

12H8/f7

12 H9/e8 O

1 mini

E E

Coupe E-E

¹⁶

16 17

09 16

07

Echelle = 1:1

DT1 : SCIE DE MARQUETTERIE Plan d'ensemble

08

Coupe B-B

33'

E E

(4)

1

A

1

A B

C D

E F

G H

2 3 4

B

C

D

E

F

G

H

234

2

2 / Date :22/05/2011 DessinÄ par :Alexandre Toumine

Feuille : Grp : Prof

A3H

Format

DT_scie_marquetterie.dft

47 2 Vis Chc - M4x12 Acier

46 1 Joint Å lÇvre IE - A16 x 30 x 7 Nitrile

45 2 Vis Chc - M4x10 Acier

43 3 Graisseur DIN 71412 - A M 8 x 1 Acier

42 1 Bouchon Acier

41 2 Vis F Acier

40 4 Rondelle W Acier

37 1 Tampon lisse Acier S235

36 1 Vis Chc Acier

35 1 Tampon taraudÄ Acier S235

34 1 couvercle gauche Aluminium, 2017 (AU4G)

33 2 Roulement 12 28 8 Acier

32 1 Entretoise Acier S235

30 1 Poulie Aluminium, 2017 (AU4G)

29 1 Rondelle Frein Acier

28 1 Ecrou Å encoche Acier

27 1 Clavette Acier

26 1 Entretoise Acier S235

25 1 couvercle droit Aluminium, 2017 (AU4G)

24 1 Support Aluminium, 2017 (AU4G)

23 1 Rondelle Acier

22 1 Ecrou H M8 Acier

21 1 Ergot Acier

20 1 Martyr Bronze, 90%

19 1 Lame Acier

18 1 Table Aluminium, 2017 (AU4G)

17 2 Vis Hc Acier

16 1 Barre de lame Acier S235

15 1 Colonne Acier S235

14 1 Vis Å tÄton Acier

13 4 Goujon Acier

Rep QtÄ Description MatiÇre Commentaires

12 4 Ecrou H M6 Acier

11 1 Maneton Acier

10 1 Noix Bronze, 90%

09 1 Vis pointeau Hc Acier

08 6 Vis Chc M4 16 16 Acier

07 1 Cadre Acier S235

06 1 Patin Bronze, 90%

05 1 Arbre moteur Acier S235

04 1 Plaque de fermeture Acier S235

01 1 BÉti Aluminium, 2017 (AU4G)

Rep QtÄ Description MatiÇre Commentaires

01

19 15 20

04

30 18 24

42 43

45 47

05 16

07

15

34 32

19 21 20

04 30

24

45 47

25

DT2 : SCIE DE MARQUETTERIE Nomenclature

22

13 12

08